“The scientific community did not complain when Al Gore tried to [start] a witch hunt to discredit anti-alarmist scientists. They were mum when subsequent articles and books by Ross Gelbspan libelously labeled [skeptical] scientists …as stooges of the fossil-fuel industry….[and] when [a European skeptic] was tarred by Bert Bolin, first head of the IPCC, as a tool of the coal industry…”